Messages in this thread | | | Date | Wed, 1 Apr 2009 13:40:39 -0700 | From | Chris Wright <> | Subject | Re: [RFC PATCH 00/17] virtual-bus |
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* Anthony Liguori (anthony@codemonkey.ws) wrote: > Andi Kleen wrote: >> On Wed, Apr 01, 2009 at 10:19:49AM -0400, Gregory Haskins wrote: >>> Performance. We are trying to create a high performance IO infrastructure. >> >> Ok. So the goal is to bypass user space qemu completely for better >> performance. Can you please put this into the initial patch >> description? > > FWIW, there's nothing that prevents in-kernel back ends with virtio so > vbus certainly isn't required for in-kernel backends.
Indeed.
> That said, I don't think we're bound today by the fact that we're in > userspace. Rather we're bound by the interfaces we have between the > host kernel and userspace to generate IO. I'd rather fix those > interfaces than put more stuff in the kernel.
And more stuff in the kernel can come at the potential cost of weakening protection/isolation.
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